let seed = random integer from 0 to n
8) Can NFTs be used as an investment?Non-fungible tokens can be used in investment opportunities. One can purchase an NFT and resell it at a profit. Certain NFT marketplaces let sellers of NFTs keep a percentage of the profits from sales of the assets they create.
，这一点在WPS官方版本下载中也有详细论述
// 4. 将当前索引压入栈，维护单调递减特性（供后续价格计算跨度使用）
"error": {